Kamen Rider Gouki仮面ライダー剛鬼

Kamen Rider Gouki (仮面ライダー剛鬼, Kamen Raidā Gōki?) is an Oni whose name means "Manly Demon". He is one of four Oni Kamen Riders who appears in Kamen Rider's second opening sequence and were originally intended to be main characters.